22 Copper tests
ARGUS 152
299
Gain:
To ensure optimum detection of different signals, match the gain (y-axis) with the reduction
of the frequency range shown (x-axis). ARGUS always begins with the lowest gain (-26 dB
in the frequency range up to 3 MHz). Measuring range: -130 to -2 dBm/Hz.
Gain-Y: Gain settings:
-26 dB, - 20 dB, 0 dB, 20 dB
ARGUS displays all measurement results as dBm/Hz
values. These values are only comparable with others
when the resolution of the measured frequency band is
taken into account, as here the total energy of the
frequency band is determined "per Hz". The bandwidth
ARGUS is measuring is indicted in the display as
∆
f .
Frequency range:
A frequency range of from 10 kHz to 30 MHz is available for measurement; the resolution
varies depending on the selected range.
The bandwidth
∆
f at the top right in the
display shows which frequency range
is being shown in the display.
Frequency-X: Setting the
displayed frequency range. Every
press of the cursor key halves,
respectively doubles the displayed
range.
Example:
In a measuring range up to 32.768 MHz,
up to 2048 values can be displayed, so:
∆
f = 32,768 MHz / 2048 values = 16 kHz.
Consequently, a y-value marked by the
cursor and displayed (in this example 16
MHz) is the mean (in this example -133.3
dBm/Hz) across the frequency range of 16
MHz -
∆
f/2 to 16 MHz +
∆
f/2, or 15.992
MHz to 16.008 MHz.
